package net.minecraft.entity.item;

import net.minecraft.entity.Entity;
import net.minecraft.init.Blocks;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.BlockPos;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
import net.minecraft.world.WorldProviderEnd;

public class EntityEnderCrystal extends Entity {
	/** Used to create the rotation animation when rendering the crystal. */
	public int innerRotation;
	public int health;

	public EntityEnderCrystal(World worldIn) {
		super(worldIn);
		this.preventEntitySpawning = true;
		this.setSize(2.0F, 2.0F);
		this.health = 5;
		this.innerRotation = this.rand.nextInt(100000);
	}

	public EntityEnderCrystal(World worldIn, double p_i1699_2_, double p_i1699_4_, double p_i1699_6_) {
		this(worldIn);
		this.setPosition(p_i1699_2_, p_i1699_4_, p_i1699_6_);
	}

	/**
	 * returns if this entity triggers Block.onEntityWalking on the blocks they walk
	 * on. used for spiders and wolves to prevent them from trampling crops
	 */
	protected boolean canTriggerWalking() {
		return false;
	}

	protected void entityInit() {
		this.dataWatcher.addObject(8, Integer.valueOf(this.health));
	}

	/**
	 * Called to update the entity's position/logic.
	 */
	public void onUpdate() {
		this.prevPosX = this.posX;
		this.prevPosY = this.posY;
		this.prevPosZ = this.posZ;
		++this.innerRotation;
		this.dataWatcher.updateObject(8, Integer.valueOf(this.health));
		int i = MathHelper.floor_double(this.posX);
		int j = MathHelper.floor_double(this.posY);
		int k = MathHelper.floor_double(this.posZ);

		if (this.worldObj.provider instanceof WorldProviderEnd
				&& this.worldObj.getBlockState(new BlockPos(i, j, k)).getBlock() != Blocks.fire) {
			this.worldObj.setBlockState(new BlockPos(i, j, k), Blocks.fire.getDefaultState());
		}
	}

	/**
	 * (abstract) Protected helper method to write subclass entity data to NBT.
	 */
	protected void writeEntityToNBT(NBTTagCompound tagCompound) {
	}

	/**
	 * (abstract) Protected helper method to read subclass entity data from NBT.
	 */
	protected void readEntityFromNBT(NBTTagCompound tagCompund) {
	}

	/**
	 * Returns true if other Entities should be prevented from moving through this
	 * Entity.
	 */
	public boolean canBeCollidedWith() {
		return true;
	}

	/**
	 * Called when the entity is attacked.
	 */
	public boolean attackEntityFrom(DamageSource source, float amount) {
		if (this.isEntityInvulnerable(source)) {
			return false;
		} else {
			if (!this.isDead && !this.worldObj.isRemote) {
				this.health = 0;

				if (this.health <= 0) {
					this.setDead();

					if (!this.worldObj.isRemote) {
						this.worldObj.createExplosion((Entity) null, this.posX, this.posY, this.posZ, 6.0F, true);
					}
				}
			}

			return true;
		}
	}
}
